Determinations of alpha_s using JADE data of e^+e^- Annihilations at sqrt{s} = 22 to 44 GeV

Details Determinations of alpha_s using JADE data of e^+e^- Annihilations at sqrt{s} = 22 to 44 GeV Determinations of alpha_s using JADE data of e^+e^- Annihilations at sqrt{s} = 22 to 44 GeV

1997-08-26

arxiv.org/abs/hep-ex/9708037v1

Nucl.Phys.Proc.Suppl. 64 (1998) 7-11

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, uses espcrc2.sty (included) and epsfig.sty, LaTeX2e, 8 .eps-files

Scientific paper

10.1016/S0920-5632(97)01026-8

Data recorded by the JADE experiment at the PETRA e^+e^- collider were used to measure distributions of new event shape observables. The distributions were compared with resummed QCD calulations (O(alpha_s^2)+NLLA), and the strong coupling constant alpha_s was determined at \sqrt{s}= 22, 35 and 44 GeV. The results are in agreement with previous combined results of PETRA but have smaller uncertainties. Together with corresponding data from LEP, the energy dependence of alpha_s is significantly tested and is found to be in good agreement with the QCD expectation.

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